Home / 28,181.76-42,242.25-18,328.11

Finding the Fourth Proportional to 28,181.76, 42,242.25 and 18,328.11

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Solution

The fourth proportional to 28,181.76, 42,242.25 and 18,328.11 is: 27,472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.76 : 42,242.25 = 18,328.11 : x
  2. Step 2: Convert to fraction form
    28,181.76/42,242.25 = 18,328.11/x
  3. Step 3: Cross multiply
    28,181.76x = 42,242.25 × 18,328.11
  4. Step 4: Simplify right side
    28,181.76x = 774,220,604.65
  5. Step 5: Solve for x
    x = 774,220,604.65/28,181.76
  6. Step 6: Final answer
    x = 27,472.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.